13910820 has 96 divisors (see below), whose sum is σ = 48577536. Its totient is φ = 2889600.

The previous prime is 13910783. The next prime is 13910833. The reversal of 13910820 is 2801931.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3115 + ... + 6125.

It is an arithmetic number, because the mean of its divisors is an integer number (506016).

Almost surely, 2^13910820 is an apocalyptic number.

13910820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13910820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24288768).

13910820 is an abundant number, since it is smaller than the sum of its proper divisors (34666716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13910820 is a wasteful number, since it uses less digits than its factorization.

13910820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3041 (or 3039 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 13910820 is about 3729.7211692029. The cubic root of 13910820 is about 240.5013823916.

Subtracting from 13910820 its reverse (2801931), we obtain a square (11108889 = 3333²).

It can be divided in two parts, 139108 and 20, that added together give a triangular number (139128 = T₅₂₇).

The spelling of 13910820 in words is "thirteen million, nine hundred ten thousand, eight hundred twenty".